Scraper



April 28, 1925. I 1,535,283

' P. c. ANDERSON SCRAPER Filed Feb. 15, 1925 a Sheets-Sheet 1 LIN 141M 5f" f z INVENTOR 7 aummsw A TTORNEYS Agril- 28, 1925.

P. C. ANDERSON S CRAPER s sneets-she5 2 Filed Feb. 15. 1923 vxmmmm ATTORNEYS April 28, 1925. 1,535,283

P. c. ANDERSON S CRAPEH Filed Feb. 15. 1923 3 Sheets-Sheet 5 INVENTOR 2.L .Qmbawsom A TTORNEYS Patented Apr. 28, 1925..

untrue ST PHILIP C. ANDERSON, RAPID CITY, QOUIH DAKOTA;

CRA'PEB.

Application filed February 15, 1923.

To all whom it may concerns Beitknown that I, PHILIP C. ANnEnsoN, acitizen ofthe United States, and a resident of Rapid City, in the countyof Pennington and Stateof' South Dakota, have invented a new and usefulImprovement in Scrapers, ofwhich the following is'afull, clear, andexact description.

My invention relates todmprovements in scrapers, mor particularly toscrapers for use on road 'constructionwor the like, and it consistsinitl'ie combinations, constructions, and arrangements herein described:and claimed. 1

An object of my invention is to provide a scraperin which use is made ofa scraper bucket which is mounted on 1 wheels, the wheels being,however, in the rear of the bucket, thereby enabling-the latter to getinto 1 places where the" ordinary centerwheeled bucket could notenter.

A further object: of my invention-is to provide a scraper of awheeled-bucket type, which is provided with a power dump, thusobviatingthelabor necessary to dump the load.

A further object of myinvention is to provide a bucket which: is pivotedat its front end, thus enabling the rear end to be raised for dumping,and permitting the front end of thebucket to act as a leveler totioat orspread out the material beingdumped.

A further object of my invention is to provide novel means forraisingthe bucket from theground after it is loaded and for subsequentlytilting it to discharge the'load.

A further objeotof my invention is to provide a device inwhich thewheels of the bucket, which, as stated, are disposed in the rear of thelatter, are also-within the side edges of the bucket,therebypreventingthe raising of the bucket, as would be the case werethe wheels farther apart than thewidth of th bucket, when they encountera roclc orothcrolfstacleoutside of the path of the bucket.

A further object of my invention is to provide a wheeled scraper of sucha form that it'can be made up?- into a train of trailers, which may bedrawn by a tractor, and with which sharp turns canbe made."

Otherobjects and advantages will appear in the following specification,and the novel features' of the invention will be particularly pointedoutin the appended claims.-

SeriaI No. 619,228.

My invention is illustrated in the accompanying drawings, forming partof this application, in which Figure 1 is a perspective view of thescraper,

Figure 2 is a plan view,

Figure 3 is an enlarged sectional WlGWSll'bstantially on theline 33 ofFigure 2,

Figure t is a diagrammatic" view showing a series of trailerunits,

Figure 5 is a detail view showing a portion-of the dumping mechanism,

Figure 6 is a sectional detail'view ofa portion of the clutchnnechanism,

Figure 7 is a sectional view along the line '?-7 of Figure 6, and

Figure 8 is a diagrammatic view showing the manner ofsupportingradjacentdrailers.

liq-carrying out my invention, .Iprovide an oblong frame 1, preferably'of channel iron, the ends-taperingtoward the'center asshown at 2.Secured to the under portion of the frame neurone end thereof arebrackets, such as that shown at 3, inwhich are journalled the endsof anaxle 1. Carried bythe axle 1 are wheels 5, which, as will be observedfrom Figure 2, arewithin thesides of the frame 1. One end of-the axle 4bears a sprocket wheel-6 (see Figures Land 6), which is loosely mountedfor rotation on the axle, being next to a collar? which prevents themoven'lent toward the body portion of i the vehicle. The hub 8' of thesprocket wheel 6 is provided with teeth 9 arranged toengage similarteeth" on a slidable clutch member 10, which is feathered to the shaft4-, but

:which may be shifted to cause the rotation of the sprocketwheel (Shymeans ofa yoke 11, which is mounted on a-vertically extending: rockshaft 12 (see Figures 1 and 5) carried by a bracket 13,mounted on'theframe- 1. The rock shaft 12'is connect-ed witlran arm l t (seeFigure 1) operated by a link 15 (see Figure 5), which-is connected atthe bottom of alever 16, which is pivotally mounted at 17 and whosemovementis adapted to throw the clutch memberlO into or out'ofengagement with the sprocket 6 in themanner hereinafter described.

Toward-the opposite end ofthe frame 1 from that at which thewheels aremounted, is a U-shaped frame portion, consistingiof uprights 18 and 19connected together at their-topsby a horizontallydisposed member 20 (seeFigures 1, 2 and The uprights 18 and 19 are secured to the frame 1 bybolts 21 (see Figure 1) and are further braced by diagonal brace members22 and 23.

Carried by the brace members 22 and 23 are bearings 24 and 25respectively for a crank shaft 26. On one end of the crank shat 25 is alarge sprocket wheel 27 which 1s connected by a sprocket chain 28 withthe sprocket wheel 6 on the axle 4.

The scraper bucket is shown in general at 29. It is provided at theforward upper corners with reenforcing plates 3O which are riveted orotherwise secured to the bucket, and which, in turn, are pivot-allysecured at 31 to the lower ends of the uprights 18 and 19 respectively.The rear end of the bucket is connected by means of links 32 (seeFigures 2 and with the central portion of the crank shaft 26, so that asthe crank shaft is rotated, the bucket is oscillated from its normalcarrying position to the dumping position, and back to its normalposition, by the mechanism hereinafter described.

ieferrin again to Figures 1, 3 and 5, it will be noted that the lever 16which, as stated, is pivotally mounted at 17, is, in fact, a U-shapedlever, consisting of the arms 16 connected by a cross member 16 (seeFigure 3). The pivotal connections 17 of the U- shaped lever 16 are onthe inclined frame members 22 and 23 respectively, and then'ianipulation of either of the levers 16 from either side of themachine will operate the clutch member 10 in the manner described.

Referring now particularly to Figures 1 and 5, it will be seen thatthere is a bracket 33 which is secured to one of the arms of the lever16, and which serves as a support for a pivotally mounted impact member34. The latter is normally held by springs 35 and 36 in the positionshown in Figure 5. The lever has an oppositely extending crescent-shapedbar 37, to which is pivotally secured a rod 38. The latter passes intothe housing 39 pivotally mounted at 40 on a bracket 41. A spring 42presses on the collar 43 within the housing, which collar is secured tothe rod 38. The construction is such that when the lever 16 is in theposition shown in Figure 5, the spring 42 is exerting tension throughthe rod 38 on the bar 37. YVhen the upper end of the lever is moved tothe left in Figure 5, the spring 42 is compressed, and when the leverhas moved far enough to bring the pivotal connection of the rod 38 withthe bar 37 downwardly past the pivotal point 40, the bar and the leverare given a quick throw in the direction of their movement. The samething occurs when the lever is moved in the opposite direction.

It will be noted that the sprocket wheel 27 is provided with an arm orleg 44, which,

during the revolution of the sprocket wheel, is arranged to engage theimpact member 34.

Toward the rear end of the frame are inclined frame members 45 and 46,at the top of which is a bearing 47 (see Figure 1).

A bearing block 48 is secured at the front end of the device. The shaft49 is carried by the bearings 47 and 48, the rear end of the shaft beingprovided with a crank handle 50. A worm 51 is provided on the shaft 49,and engages a worm wheel 52 which is mounted on a shaft 53 (see Figure2), having rigidly attached thereto an upstanding arm 54. This arm isconnected by means of a link 55 with a pair of bars 56 and 57 which arebraced by a cross member 58. The bars 56 and 57 lie above and havesubstantially the same contour as the front end of the frame 2. They arepivoted to the frame 1 at the point 59 substantially underneath theaxial line of the crank shaft 26. At the outer ends of the convergingbars 56 and 57 is a forwardly and downwardly extending brace member 60,which is rigidly secured to inclined brace members 61, the latter beingextended to form a clevis 62, by means of which a draw-bar (33 isattached. The shaft 53, bearing the gear 52, is mounted at one end in abracket 64, which is b need by an inclined strut secured to the forwardpart of the frame 2, the opposite end of the shaft being journalled inthe bearing 66, as shown in Figure 2.

From the foregoing description of the various parts of the device, theoperation thereof may be readily understood. The device is primarilydesigned to be used in trains, such as that shown in Figure 4. In thisfigure the tractor is shown diagrammatically at A, and the scrapertrailers at B, C, D, and IE respectively. In manipulating thesetrailers, the operator stands at the rear on the foot boards (37. As thetrain is drawn along by the tractor, the bucket of one scraper may belowered into its operative position, i. e, the position in which it isfilled, by turning the handle 50. This, through the medium of the shaft49 and the gears 51 and 52, will turn the shaft and with it the arm 54.In Figure 3 the bucket 29 is shown as being drawn along the ground to befilled. N hen the bucket is filled, it is raised in the followingmanner: Assuming that the arm 54 in Figure 1 is being rotated clockwisein the figure, it will cause a thrust downwardly on the member 55, butsince the forward end is secured to the draw-bar of the tractor, andhence cannot move downwardly, the result will be that the frame 2 willbe swung upwardly about the axle 4 as an axis, into the dotted lineposition shown in Figure 3, in which the bucket will be carried alongclear of the ground. The operator of the next trailer may lower, fill,and raise his bucket by manipulating his handle in the same manner. Inthis way the buckets are filled one at a time, and consequently requireless power for their filling, than if one bucket of a large capacity,say four times as large, were filled at one operation.

When the train arrives at the dumping place, either of the levers whichis normally in the dotted line position shown in Figure 5, is pushedinto the full line position. This, as has been explained before, throughthe medium of the rod 15, the arm 1%, the rock shaft 12, and the yoke11, will cause a quick engagement of the clutch members so as to drivethe sprocket wheel 27 from the shaft 4. The rotation of the crank shaft26 will cause the bucket to take the position shown in Figure 1, therebydumping the load. Further rotation of the sprocket will cause theengagement of the lug 4-4 with the impact member 34, thus swinging thelevers 16 into their normal dotted line position shown in Figure 5, andcausing a sudden disengagement of the clutch when the bucket is in itsnormally lowered position.

Each of the scraper buckets of the train is dumped at the proper place,and the train may be brought back to the place where the dirt is beingexcavated.

I desire to call particular attention to the fact that the taperedconstruction of the trailer units will permit turning in a comparativelyshort space, as illustrated in Fig ure 4. Furthermore, when the unitsare com nected 1n trams, as shown 1n Flgure 8, the

wheels 5 on the rear of one unit, as for in stance, the unit B, form asupport for the front end of the unit C in the rear, thus e11- ablingeach unit to be provided with two wheels only, and permitting theraising or lowering of the bucket as described.

The position of the bucket after dumping is such that the front end ofthe bucket acts as a scraper or leveler to float the material dumped,thus obviating the necessity of distributing the dumped materialmanually.

I claim:

1. A scraper comprising a fame, wheels for supporting said frame, asecond frame pivotally secured to said first named frame, said secondnamed frame adapted to be attached to a tractor or the like, and to besupported thereby, a worm carried by said first named frame, a worm gearcarried by said first named frame and in mesh with said worm, manuallycontrolled means for rotating said worm, an arm carried by said wormgear, a link connecting said arm with said second named frame whereby arotation of said worm will raise or lower said first named frame withrespect to said second named frame, and a bucket carried by said firstnamed frame and adapted to be moved vertically with respect to theground when said first named frame is moved with respect to said secondnamed frame.

2. A scraper comprising a frame, wheels for supporting said frame, abucket pivotally carried by said frame, a crank carried by said frameand being operatively connected to said bucket so as to swing the latterwhen said crank is actuated, means connecting said crank to said wheels,said means including a clutch and means for automatically disconnectingsaid clutch after said crank has made one complete revolution, wherebysaid crank is disconnected from said wheels.

3. A scraper comprising a frame, a shaft carried by said frame, wheelsmounted on said shaft, a bucket pivotally carried by said frame, a crankcarried by said frame, a sprocket mounted on said crank, a secondsprocket mounted on said shaft, connections between said sprockets, aclutch connecting said second named sprocket to said shaft, means forthrowing said clutch out of engagement with said sprocket, and meanscarried by said first named sprocket for actuating said clutch throwingmeans.

4L. A scraper comprising a frame, a shaft carried by said frame, wheelsmounted on said shaft, a bucket pivotally carried by said frame, a crankcarried by said frame, a sprocket mounted on said crank, a secondsprocket mounted on said shaft, connections between said sprockets, aclutch connecting said second named sprocket to said shaft, means forthrowing said clutch out of engagement with said sprocket, and meanscarried by said first named sprocket for actuating said clutch throwingmeans, said clutch throwing means comprising a spring pressed leveradapted to be yieldingly held in two positions, and connections betweensaid lever and said clutch.

PHILIP G. ANDERSON.

